-/*-
- * BSD LICENSE
- *
- * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _RTE_EAL_MEMCONFIG_H_
#define _RTE_EAL_MEMCONFIG_H_
-#include <rte_tailq.h>
-#include <rte_memory.h>
-#include <rte_memzone.h>
-#include <rte_malloc_heap.h>
-#include <rte_rwlock.h>
+#include <stdbool.h>
+
+#include <rte_compat.h>
+
+/**
+ * @file
+ *
+ * This API allows access to EAL shared memory configuration through an API.
+ */
#ifdef __cplusplus
extern "C" {
#endif
/**
- * Index type of tailq_head
- */
-enum rte_tailq_t {
-#define rte_tailq_elem(idx, name) idx,
-#define rte_tailq_end(idx) idx
-#include <rte_tailq_elem.h>
-};
+ * Lock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for shared access.
+ */
+void
+rte_mcfg_mem_read_unlock(void);
+
+/**
+ * Lock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_lock(void);
+
+/**
+ * Unlock the internal EAL shared memory configuration for exclusive access.
+ */
+void
+rte_mcfg_mem_write_unlock(void);
/**
- * the structure for the memory configuration for the RTE.
- * Used by the rte_config structure. It is separated out, as for multi-process
- * support, the memory details should be shared across instances
+ * Lock the internal EAL TAILQ list for shared access.
*/
-struct rte_mem_config {
- volatile uint32_t magic; /**< Magic number - Sanity check. */
+void
+rte_mcfg_tailq_read_lock(void);
- /* memory topology */
- uint32_t nchannel; /**< Number of channels (0 if unknown). */
- uint32_t nrank; /**< Number of ranks (0 if unknown). */
+/**
+ * Unlock the internal EAL TAILQ list for shared access.
+ */
+void
+rte_mcfg_tailq_read_unlock(void);
+
+/**
+ * Lock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_lock(void);
- /**
- * current lock nest order
- * - qlock->mlock (ring/hash/lpm)
- * - mplock->qlock->mlock (mempool)
- * Notice:
- * *ALWAYS* obtain qlock first if having to obtain both qlock and mlock
- */
- rte_rwlock_t mlock; /**< only used by memzone LIB for thread-safe. */
- rte_rwlock_t qlock; /**< used for tailq operation for thread safe. */
- rte_rwlock_t mplock; /**< only used by mempool LIB for thread-safe. */
+/**
+ * Unlock the internal EAL TAILQ list for exclusive access.
+ */
+void
+rte_mcfg_tailq_write_unlock(void);
- uint32_t memzone_idx; /**< Index of memzone */
+/**
+ * Lock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_lock(void);
- /* memory segments and zones */
- struct rte_memseg memseg[RTE_MAX_MEMSEG]; /**< Physmem descriptors. */
- struct rte_memzone memzone[RTE_MAX_MEMZONE]; /**< Memzone descriptors. */
+/**
+ * Unlock the internal EAL Mempool list for shared access.
+ */
+void
+rte_mcfg_mempool_read_unlock(void);
- /* Runtime Physmem descriptors. */
- struct rte_memseg free_memseg[RTE_MAX_MEMSEG];
+/**
+ * Lock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_lock(void);
- struct rte_tailq_head tailq_head[RTE_MAX_TAILQ]; /**< Tailqs for objects */
+/**
+ * Unlock the internal EAL Mempool list for exclusive access.
+ */
+void
+rte_mcfg_mempool_write_unlock(void);
- /* Heaps of Malloc per socket */
- struct malloc_heap malloc_heaps[RTE_MAX_NUMA_NODES];
-} __attribute__((__packed__));
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Lock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_lock(void);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Unlock the internal EAL Timer Library lock for exclusive access.
+ */
+__rte_experimental
+void
+rte_mcfg_timer_unlock(void);
-inline static void
-rte_eal_mcfg_wait_complete(struct rte_mem_config* mcfg)
-{
- /* wait until shared mem_config finish initialising */
- while(mcfg->magic != RTE_MAGIC)
- rte_pause();
-}
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * If true, pages are put in single files (per memseg list),
+ * as opposed to creating a file per page.
+ */
+__rte_experimental
+bool
+rte_mcfg_get_single_file_segments(void);
#ifdef __cplusplus
}
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